The p41 isoform of invariant chain is a chaperone for cathepsin L

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The p41 isoform of invariant chain is a chaperone for cathepsin L.

The p41 splice variant of major histocompatibility complex (MHC) class II-associated invariant chain (Ii) contains a 65 aa segment that binds to the active site of cathepsin L (CatL), a lysosomal cysteine protease involved in MHC class II-restricted antigen presentation. This segment is absent from the predominant form of Ii, p31. Here we document the in vivo significance of the p41-CatL intera...

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Secretion of proteases is critical for degradation of the extracellular matrix during an inflammatory response. Cathepsin (Cat) S and L are the major elastinolytic cysteine proteases in mouse macrophages. A 65 amino acid segment of the p41 splice variant (p41(65aa)) of major histocompatibility complex class II-associated invariant chain (Ii) binds to the active site of CatL and permits the main...

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ژورنال

عنوان ژورنال: The EMBO Journal

سال: 2001

ISSN: 1460-2075

DOI: 10.1093/emboj/20.15.4055